We go to the gym for numerous reasons, one of the top being to shed some extra pounds. But sometimes we hit a weight-loss wall and our workout regimen isn’t, well, working anymore.

This can be for a variety of reasons and pinpointing the exact issue can be frustrating. Take a moment to think about your exercise routine. Here are 10 reasons why you may not be reaching your weight loss goal.

Life as a single woman would be so much better if all of your potential matches tattooed the kind of relationship they were looking for right on their foreheads. But until that becomes mandatory (and socially acceptable), we’ll have to settle for the occasional insights from online dating sites to enlighten us. Case in point: The dating app Clover recently polled users across the U.S. about whether they were looking for casual dates, long-term relationships, hookups, or new friends.

It turns out that New York City topped the list of cities where people are looking for long-term love. On the other side of the spectrum, Los Angeles Clover users reported looking for hookups more than any other city, while Chicagoans were most likely to be looking for new friends and Houston singles were most likely to want casual dating, according to Clover. Take a look at the rest of their results to see where you could find your ideal dating scene.

We get it. On a scale of zero to 10, your motivation to work out over the holidays ranks a negative two. Plus, who has to time to squeeze in exercise during family time? The answer: you. Here's when high-intensity interval training (HIIT) is super helpful.

HIIT consists of short, intense bursts of exercise with either active recovery (like less intense exercise) or complete rest in between. Cardio workouts and strength routines both qualify—they can both get your heart pumping AND fire up your metabolism thanks to the phenomenon known as after burn. You can get a super effective workout in 20 minutes or less—even in as few as 4 minutes if you do Tabata-style training (20 seconds hard, 10 seconds easy).

Since HIIT is one of the hottest fitness trends for 2014, why not get a jumpstart on a fitter you for the new year! Try one of these high-intensity workouts while the family's opening presents, as you wait for the turkey to cook, or right before A Christmas Story begins—seriously, you can do them almost anywhere, anytime.

1. Omega-3 fatty acids: Okay, so this one is pretty well-known—and with good reason. They are famed for improving heart health and mood, as well as promoting healthy waistlines. But contrary to popular opinion, you don't have to eat salmon to get your omega-3 on. Check out these five foods that contain omega-3's that aren't fish.

2. Pinolenic acid: It's time for a pesto party. This fatty acid, found in pine nuts and especially rich in Korean ones, has been linked to appetite suppression and improved satiety, according to the Institute of Food Technologists 

3. Conjugated linoleic acid: However you try to pronounce it, conjugated linoleic acid can reduce your body-fat percentage while increasing how much lean body mass (a.k.a. muscle) you have, according to the editorial.

4. Flaxseed oil: A good source of omega-3's, -6's, and -9's (seriously, what omega doesn't it have?), flaxseed oil can help reduce inflammation, which has been linked to weight gain. Try using it as a salad dressing. It has a light, nutty flavor that goes great with veggies.

5. Hemp oil: It's rich in those oh-so-popular omega-3's, but also the potent antioxidant vitamin E. Check out these healthy hemp recipes.

6. Fish oil: These supplements can improve your heart and brain health, and according to research in The American Journal of Clinical Nutrition, boost your body's muscle-building response to strength training.

MORE: The 5 Fish That Are Most Contaminated—And 5 You Should Eat Instead

7. Canola oil: Recent research shows that this versatile cooking oil improves blood sugar control in type 2 diabetics. And chances are, it can help you, too. Try munching on these healthy recipes to get some more canola oil in your diet.

8. High oleic soybean oil: Low on saturated fat, this stuff packs three times more monounsaturated fats than regular soybean oil, according to the Institute of Food Technologists. It has a really high smoke point, so it's great for cooking anything you really want to sizzle, like a stir-fry.

9. Coconut oil: All the rage right now, coconut oil is believed to be a powerful energy-booster and is known for its bevy of medium-chain triglycerides, which are metabolized more quickly than other saturated fats. Try it out in these awesome coconut recipes.

1. Vaccinations rates are up, but remain relatively low overall 

Although influenza vaccination rates have risen in general, fewer than 40 percent of healthy American adults ages 18-64 have been vaccinated.

2. The flu hit especially hard last year

Last season was “a relatively bad year for flu. There were tens of millions of illnesses,” said CDC director Dr. Tom Frieden. Young and middle-aged adults were hit hard, and just over 100 children died, and “many of those deaths might have been prevented if those children had gotten a vaccination.

3. Flu vaccinations have increased dramatically among pregnant women

Vaccination coverage in pregnant women has remained steady at around 50 percent, the NFID says, up from under 15 percent during the 2009 flu pandemic. “An overwhelming number of studies have shown that the flu shot is safe in pregnancy during all trimesters,” said Dr. Laura Riley, Associate Professor of Obstetrics, Gynecology and Reproductive Biology at Harvard Medical School.

Beth Shaw is the President of YogaFit, the world’s largest yoga training school. Her third book, YogaLean, will be released this fall, and offers a holistic approach to eating healthy, losing weight, and keeping it off. Find more tips at her personal site desiplay.com.

At the end of a summer, as fall approaches, we can sometimes feel busier than any other time of year. We tend to work too much and exercise too little, assuming that unless we have an hour or more to spend at the gym on a regular basis, it’s pointless to even try to get in shape.

Well, here is my solution to that problem, and I think it’s a good one: Take just 30 minutes out of your busy day, and go on a gratitude walk. Make it special. Make it an event that you look forward to. View it as an opportunity for positive reflection. When you walk, make sure you move at a fast pace and reflect on things in your life that you are grateful for.

I am fortunate to live in both exciting New York City and sunny Southern California. (Being bicoastal is really a joy!) But this walk can be done anywhere—in the city or on the countryside. It can even be done on a treadmill.

A couple of month's ago, Men's Health asked Alwyn Cosgrove, C.S.C.S.—one of the world's top trainers—to create a cutting-edge fat loss program forMen's Health. And, of course, he obliged. But a curious thing: One of the workouts in the plan featured just two exercises.

That's right: When asked to create a super-effective, calorie-torching routine, Cosgrove gave us a workout that had readers do only a dumbbell swing and a squat thrust. This confused some folks, who wondered, "How can you lose fat with just two exercises?"

Kettlebell (or Dumbbell) Swing
Bend at your hips, and hold a kettlebell (or dumbbbell) with both hands at arm’s length in front of you. Now, rock back slightly and “hike” the kettlebell between your legs. Then squeeze your glutes, thrust your hips forward forcefully, and swing the weight to shoulder height. Allow momentum to swing the weight—you're not trying to actively lift it with your arms. Reverse the movement, so that you swing the kettlebell between your legs again. Make sure you don't round your lower back at any time; it should stay naturally arched when you bend at your hips. Continue to swing back and forth. Watch the video below to see fitness expert David Jack show you how to do the kettlebell swing with perfect form:

Of course your twenties are a time to live it up, explore your options and do what you're crazy about. But they're also a time to get into the habit of, well, practicing healthy fitness habits—because doing so will ensure that you're healthier later on, according to a new German study published in the journal Psychology of Sport and Exercise. (See also: 30 Health Choices You Should Make Before You Turn 30.)

For the study, researchers tracked over 500 adults for over 18 years, and found that people who were healthiest in their young adult years were also healthiest over time. So we reached out to some fitness experts to find out their best tips for what 20-somethings should pay attention to. Your mission? Start doing all of these things—right now. Your future self will thank you!

The experts we spoke with: Greg Justice, an exercise physiologist and author of Mind Your Own Fitness; Ellen Breeding, an exercise physiologist at AYC Fitness in Kansas City; Irene Lewis-McCormick, certified strength and conditioning specialist and author of A Woman's Guide to Fitness & Strength